The proclamation was issued to commemorate the 32nd anniversary of a uranium tailings spill near Church Rock, N.M., as well as six decades of impacts from uranium mining on the reservation.

Elected officials and other community leaders planned to gather in the Church Rock area Saturday morning for a prayer and a march to the site of the July 16, 1979 spill.

That day, millions of gallons of acidic water poured into the north fork of the Rio Puerco after an earthen uranium tailings dam failed. Within days, contaminated tailings liquid was found 50 miles downstream in Arizona.

There will also be a discussion Saturday evening in Gallup about nuclear fuel and radioactive contamination.